package main

import (
	"fmt"
	"os"
)

	
func createFile(p string) *os.File {
    fmt.Println("creating")
    f, err := os.Create(p)
    if err != nil {
        panic(err)
    }
    return f
}

func closeFile(f *os.File){
	fmt.Println("closing")
	err := f.Close()
	if err != nil {
		panic(err)
	}
}

	
func writeFile(f *os.File) {
    fmt.Println("writing")
    fmt.Fprintln(f, "data")
}

func main(){
	f := createFile("/tmp/defer.txt")
	defer closeFile(f)
	writeFile(f)

}